The Philistines—perennial enemies of the Israelites in the Bible—were one of several tribes of “Sea Peoples” from the Aegean who invaded and colonized the eastern shores of the Mediterranean in the 12th century B.C.E. While the Philistines were concentrated in what is now the Gaza Strip, other tribes lived along the northern coast of Israel as well as in Syria and Lebanon. They were a force to be reckoned with:

In wave after wave of land and sea assaults [the Sea Peoples] attacked Syria, Palestine, and even Egypt itself. In the last and mightiest wave, the Sea Peoples, including the Philistines, stormed south from Canaan in a land and sea assault on the Egyptian Delta. According to Egyptian sources, Ramesses III (c. 1198–1166 B.C.E.) soundly defeated them in the eighth year of his reign. He then permitted them to settle on the southern coastal plain of Palestine. There they developed into an independent political power and a threat both to the disunited Canaanite city-states and to the newly settled Israelites.

Early Friday morning, Israel attacked military installations near the Iranian cities of Isfahan and nearby Natanz, the latter being one of the hubs of the country’s nuclear program. Jerusalem is not taking credit for the attack, and none of the details are too certain, but it seems that the attack involved multiple drones, likely launched from within Iran, as well as one or more missiles fired from Syrian or Iraqi airspace. Strikes on Syrian radar systems shortly beforehand probably helped make the attack possible, and there were reportedly strikes on Iraq as well.

Iran itself is downplaying the attack, but the S-300 air-defense batteries in Isfahan appear to have been destroyed or damaged. This is a sophisticated Russian-made system positioned to protect the Natanz nuclear installation. In other words, Israel has demonstrated that Iran’s best technology can’t protect the country’s skies from the IDF. As Yossi Kuperwasser puts it, the attack, combined with the response to the assault on April 13,

clarified to the Iranians that whereas we [Israelis] are not as vulnerable as they thought, they are more vulnerable than they thought. They have difficulty hitting us, but we have no difficulty hitting them.

Nobody knows exactly how the operation was carried out. . . . It is good that a question mark hovers over . . . what exactly Israel did. Let’s keep them wondering. It is good for deniability and good for keeping the enemy uncertain.

The fact that we chose targets that were in the vicinity of a major nuclear facility but were linked to the Iranian missile and air forces was a good message. It communicated that we can reach other targets as well but, as we don’t want escalation, we chose targets nearby that were involved in the attack against Israel. I think it sends the message that if we want to, we can send a stronger message. Israel is not seeking escalation at the moment.